This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 165 |
| 3 | 2321 |
| 4 | 32945 |
| 5 | 477309 |
| 6 | 6879341 |
| 7 | 99118753 |
| 8 | 1428782305 |
| 9 | 20594013941 |
| 10 | 296830835781 |
| 11 | 4278398369137 |
| 12 | 61667023808785 |
| 13 | 888841954030797 |
| 14 | 12811387949686973 |
| 15 | 184657868037699425 |
| 16 | 2661579521073401057 |